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Bug #64208 writeImageFile does not respect setImageFormat
Submitted: 2013-02-14 09:37 UTC Modified: 2013-10-03 14:57 UTC
Votes:3
Avg. Score:4.7 ± 0.5
Reproduced:3 of 3 (100.0%)
Same Version:1 (33.3%)
Same OS:0 (0.0%)
From: sites at hubmed dot org Assigned:
Status: Wont fix Package: imagick (PECL)
PHP Version: master-Git-2013-02-14 (Git) OS: Ubuntu
Private report: No CVE-ID: None
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 [2013-02-14 09:37 UTC] sites at hubmed dot org 
Description:
------------
When converting a PNG image to JPEG, by using setImageFormat('JPEG'), writing the 
file out using writeImage('file.jpg') correctly produces a JPEG file, as does 
getImageBlob(), but writeImageFile($resource) produces a PNG file.

PHP 5.4.9-4ubuntu1
ImageMagick 6.7.7-10
Imagick 3.1.0RC2

Test script:
---------------
https://gist.github.com/hubgit/4951551



Expected result:
----------------
writeImageFile produces an image in the format set using setImageFormat.


Actual result:
--------------
writeImageFile produces an image in the format that it was originally created as.

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 [2013-03-11 20:27 UTC] me at brot-und-spiele dot de 
I can confirm this

PHP 5.3.17
Imagick 3.0.1 + 3.1.0RC2
ImageMagick ImageMagick 6.6.5-8
 [2013-09-25 07:43 UTC] mkoppanen@php.net 
This looks like ImageMagick behaviour to me as both of these methods are pretty 
thin wrappers. Has this been reported upstream?
 [2013-09-25 07:43 UTC] mkoppanen@php.net
-Status: Open +Status: Feedback
 [2013-09-29 06:56 UTC] sites at hubmed dot org 
I have not reported this upstream.
 [2013-09-29 07:11 UTC] mkoppanen@php.net 
Upstream report: http://www.imagemagick.org/discourse-server/viewtopic.php?
f=3&t=24165
 [2013-10-03 06:53 UTC] mkoppanen@php.net
-Status: Feedback +Status: Wont fix
 [2013-10-03 06:53 UTC] mkoppanen@php.net 
It looks like this is expected behaviour. For some reason writing the image to a handle uses image filename as the definition for the format. See:

https://github.com/mkoppanen/imagick/blob/master/tests/022-writeimagefileformat.phpt
 [2013-10-03 14:57 UTC] mkoppanen@php.net 
As the behaviour is not quite intuitive I added optional format parameter to writeImageFile call on master: https://github.com/mkoppanen/imagick/blob/master/tests/022-writeimagefileformat.phpt#L46

I am still thinking that it would be better to make writeImageFile to listen setImageFormat but this would break backwards compatibility.
 
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